Hi Everyone!
I am trying to verify a beam-girder single plate connection:
I don´t understand why RAM Connection considers this:
I understand that it calculates the bolt group capacity as the product of one boly shear capacity by the coeficient C, that i think it has to do with some kind of eccentricity of the loads.
I don´t know why it considers this eccentricity... i would have calculated this dividing shear in the 4 bolts and the same with T or C, and then calculating the resultant shear load by doing a vector sum of that 2.
I would say that the loads (T or C and Q) are applied in the center of gravity of the 4 bolts...
Tables 7-1..14 are the tables 7-1 to 7-14 from AISC Steel construction Manual... which gives values of C for different eccentricity values...
RAM Connection uses an iterative procedure to calculate the bolt group C factors that are reported for eccentrically loaded bolt groups in single plates and other connections designed per AISC 360.
The bolt groups that are eccentrically loaded are solved using an ultimate strength approach with the Instantaneous Center of Rotation method.